Bug 1217918 - VUL-0: tor: UAF and NULL pointer dereference crash on Exit relays (TROVE-2023-007)
Summary: VUL-0: tor: UAF and NULL pointer dereference crash on Exit relays (TROVE-2023...
Status: RESOLVED FIXED
Alias: None
Product: openSUSE Distribution
Classification: openSUSE
Component: Security (show other bugs)
Version: Leap 15.5
Hardware: Other Other
: P3 - Medium : Normal (vote)
Target Milestone: ---
Assignee: Security Team bot
QA Contact: E-mail List
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Depends on:
Blocks: 1225537
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Reported: 2023-12-10 10:01 UTC by Andreas Stieger
Modified: 2024-05-29 11:16 UTC (History)
1 user (show)

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Description Andreas Stieger 2023-12-10 10:01:35 UTC 
It was discovered that tor before 0.4.8.10 is affected by an issue (TROVE-2023-007) affecting Exit relays supporting Conflux. 

    - Improper error propagation from a safety check in conflux leg
      linking lead to a desynchronization of which legs were part of a
      conflux set, ultimately causing a UAF and NULL pointer dereference
      crash on Exit relays

References:
https://forum.torproject.org/t/security-release-0-4-8-10/10536
https://gitlab.torproject.org/tpo/core/team/-/wikis/NetworkTeam/TROVE
https://gitlab.torproject.org/tpo/core/tor/-/raw/release-0.4.8/ReleaseNotes
Comment 1 OBSbugzilla Bot 2023-12-10 10:45:03 UTC 
This is an autogenerated message for OBS integration:
This bug (1217918) was mentioned in
https://build.opensuse.org/request/show/1132318 Backports:SLE-15-SP4+Backports:SLE-15-SP5 / tor
Comment 2 Marcus Meissner 2023-12-14 17:04:55 UTC 
openSUSE-RU-2023:0402-1: An update that has one recommended fix can now be installed.

Category: recommended (moderate)
Bug References: 1217918
CVE References: 
JIRA References: 
Sources used:
openSUSE Backports SLE-15-SP5 (src):    tor-0.4.8.10-bp155.2.9.1
openSUSE Backports SLE-15-SP4 (src):    tor-0.4.8.10-bp154.2.21.1
Comment 3 Andreas Stieger 2023-12-15 07:51:31 UTC 
done
Comment 4 Andreas Stieger 2024-05-28 21:37:28 UTC 
Reopening: Missing in Leap 15.6. Please process incoming submission or fix in Leap 15.6 in your chosen way. (bug 1225537)
Comment 5 Andreas Stieger 2024-05-29 11:16:02 UTC 
As per bug 1225537 now also fixed in Leap 15.6, closing